This is Ascocentrum ampullaceum var. album 'Fuchs' Snow'. The normal color is a bright lavender but this one is albinistic. Albinistic clones are fairly rare in nature. This species originates in Southeast Asia where its roots hang from the trees in the very ample humidity and it forms nice clumps. This particular plant, however, is a tissue propagation that was cloned off of a plant that was grown in Florida by Mr. Fuchs.